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CHARLES H. BUCK, OF ST. LOUIS, MISSOURI.

Letters Patent No. 75,664, dated March 17, 1868.

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IMPROVEMENT IN 'WINDOWS FOR STOVBS.

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To ALL WHoM IT MAY ooNoEnN;

Be it known that I, CHARLES H. BUCK, of'St. Louis, in the county of St. Louis, and State ot' Missouri,

have invented a new and'improved Mode of Applying Glass Windows to Cooking-Stoves; and VI do hereby declare that the following is a. full, clear, and .exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure 1 is an elevation of one side of a cooking-stove' having glass windows applied to its doors. Figure 2 is an enlarged view of theinncr side of one ofthe doors, having a glass plate in it. Figures 3 and 4 are vertical cross-sections of the door, showing the manner of holding thc glass plates in place. Similar letters of reference indicate corresponding parts in the several figures. I The object of this-'invention is to provide the oven-doors of cooking-stoves with glass plates, in such manner as to forni windows, through which the interior of the oven can be seen without opening the doors thereof, and

so that the glass plates shall not be liable to be cracked or broken by ordinary usage, as will be hereinafter described. Y

To enable others skilled in the art to understand my invention, I will describe its construction and operation. Previous to this invention, glass plates have been applied to openings made through the oven-doors of cookstovcs, for the purpose of admitting light into an oven, and also exposing to view the in terior of such oren, without the necessity of opening its door or doors. But the great dli'eulty attending the windows, as heretofore made, has been the liability ofthe glass being broken in the ordinary use of a stove. The sudden shutting of a -stoveidoor would be likely to crack a glass, as hitherto applied to it, the striking of objectsagainst such glass,

and the ordinary contraction and expansion of the metal door would be very liable to shatter it, and thus destroy the usefulness of the stove-oven until repairs could bemade. These and other objections to glass windows on stove-doors have prevented them from being used more extensively.

My invention consists in sustaining a glass plate in place upon a stove-door by means of springs, which will allow the plate to yield under pressure or concussion.

The stove-door A is constructed with an opening. B, through it, of an elliptical, circular, rectangular, or other suitable shape, and in the inn'er'side of this door a recess, a, is made, of larger area than the said opening ]3, and of any suitable shape. I prefer to make the recesso rectangular, s o that a glass plate, C, may be easily cut to fit into it,butit may bc'made to correspond to the elliptical or circular shape of the opening B. Surroundingthe opening B, on the outer side of the door, is a raised bead,v c, which will serve as a guard for the glass plate C, and also as an ornament for the door, The glass plate C may be made at, as shown in the drawings, or it may be made concave-convex. This plate-is introduced into the recess a, und confined in place between springs g t, as shown in fig. 4. The springs g are secured to the face of a back plate, D, .so as to press the glass against the springs t, which are interposed between the metal and glass in front. The back plate D is secured in place by means of bolts and nuts, so that it can be removed at pleasure. If springs are employed on both sides of the glass plate C, those in front, which are lettered L, may be coiled springs, suitably held in place. I prefer to have two sets of springs, as shown in iig. 4, and above described, although I do not confine myself to having springs on both sides of the glass. Fig. 3 shows springs on one side only of the glass plate. This will in a measure protect the glass when struck upon the outside, as the springs will, in this case, yield, and thus prevent the glass from being brought against a solid b'ody. The springs not only protect the glass from being broken by the striking of objects against it, but these springs hold the glass in such manner that it will not be liable to become broken by' thejars andconcussions of shutting the stove-door, nor by contraction and expansion ofthe parts.

IIaving described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination of springs with 'glass .plates which are applied to stove-doors, substantially as described.

CHARLES II. BUCK.

Witnesses:

H. J. BRINKENCAMP, GEO. M. EcKEn'r. 

